I wouldn't be inclined to bet on it being particularly old but I am no musicologist. To my ears it sounds very Morris dance which is not really surprising but does suggest that perhaps it is more of a revivalist tune than an ancient one. I wonder whether it might have sprung up when the controlling family changed. That kind of fits the sound to me but hey I'm just guessing and going on instinct.

Great tune on the border pipes, in Amin: second part:measures 5-6 played with Dotted sustained whole notes,high A and F nat in that order (lead the measure with the high B if you've got it) . Otherwise tune is playable as written

Same tune. The local headmistress seems to have it nailed to mid 19th century then but possibly a 100 years older on hear say. I doubt you're going to find much more than that without some rather involved research.